Shadow Stations Cards
1
Station Card • Earth & Space Science
Solar Eclipses & Shadow Cones
New Moon Phase
Mission: Trace the Moon's shadow cones (umbra vs penumbra) hitting Earth, and evaluate why certified solar filters are required.
Visual Scientific Model • Solar Ray & Shadow Geometry Not to Scale
SUN MOON (New Moon Phase) EARTH • UMBRA (Total Eclipse) • PENUMBRA (Partial) Direct Solar Rays →
1. The Umbra (Inner Dark Cone)
The inner cone where 100% of sunlight is blocked.
- Narrow footprint on Earth (~70–150 miles wide).
- Observers witness totality (sky turns night-dark, solar corona glows).
2. The Penumbra (Outer Lighter Zone)
The outer shadow where only part of the Sun's disc is blocked.
- Covers thousands of miles across continents.
- Observers witness a partial eclipse; daylight dims slightly like an overcast sky.
Safety Protocol: Why Regular Sunglasses Fail
DANGER: No Pain Receptors The retina has no nerves to feel burns. Sunglasses only dim visible light, dilating pupils and letting invisible UV/infrared rays permanently sear eye tissue.
MANDATORY: ISO 12312-2 Only viewers certified to ISO 12312-2 or indirect methods (pinhole projector box) block 99.999% of intense radiation safely.
GO
Student Recording Sheet Task • Station 1 Draw the ray model, define Umbra vs Penumbra, and explain the retina safety standard.
Card 1 of 4
2
Station Card • Earth & Space Science
Lunar Eclipses & Atmospheric Scattering
Full Moon Phase
Mission: Model how Earth's colossal shadow blankets the Moon, and uncover why Earth's atmosphere tints the eclipsed Moon blood-red.
Visual Scientific Model • Earth's Shadow & Rayleigh Refraction Atmospheric Lens
Blue light scattered away Blue light scattered away SUN EARTH Atmosphere Ring MOON "Blood Moon" (Inside Umbra) Earth's Umbra Cone
Rayleigh Scattering: All the World's Sunsets
Atmospheric Filter Effect Earth's atmosphere scatters shorter, high-energy blue wavelengths out into deep space. This is the exact same physics that makes daytime skies blue.
Refracted Sunrise/Sunset Rays Longer red and orange wavelengths bend (refract) around Earth's curved horizon and focus softly onto the Moon, creating the iconic copper-red glow.
Hemisphere-Wide Viewing
Because Earth casts its shadow onto the entire Moon, any observer on Earth's night side can watch totality for up to 100+ minutes.
100% Naked-Eye Safe
No special eclipse glasses or filters are needed! You are observing gentle sunlight reflected off lunar regolith.
GO
Student Recording Sheet Task • Station 2 Sketch Earth's shadow, explain Rayleigh scattering, and note why viewing is safe.
Card 2 of 4
3
Station Card • Earth & Space Science
Clash of Shadows: Visual Comparison
Model Analysis
Mission: Compare the two eclipse models side-by-side, analyze shadow footprints, and classify two observational mystery scenarios.
Side-by-Side Model Comparison Shadow Scale Differences
Model A: Solar Eclipse New Moon
SUN Moon Earth Tiny footprint (~100 mi)
Moon between Sun & Earth • Totality lasts 2–7.5 min
Model B: Lunar Eclipse Full Moon
SUN Earth Moon Entire Moon engulfed
Earth between Sun & Moon • Totality lasts 1–2 hours
| Feature | Solar Eclipse | Lunar Eclipse |
|---|
| Middle Body | Moon (casts shadow onto Earth) | Earth (casts shadow onto Moon) |
| Required Phase | New Moon | Full Moon |
| Viewing Safety | ISO 12312-2 filters strictly required | 100% safe to view with naked eyes |
Scenario A
At 11:30 PM, the glowing silver disc slowly dims into a coppery red orb. Observers throughout the continent watch comfortably with binoculars for 85 minutes.
Scenario B
At 1:15 PM on a bright afternoon, twilight falls, stars appear, and spectators put on certified filter glasses to view the glowing corona for 2 minutes and 40 seconds.
GO
Student Recording Sheet Task • Station 3 Complete the comparison matrix and classify Scenarios A & B with evidence.
Card 3 of 4
4
Station Card • Earth & Space Science
The 5° Orbital Tilt & Nodes
Orbital Mechanics
Mission: Solve the astronomical mystery: Since a New Moon occurs every 29.5 days, why aren't there two eclipses every single month?
Visual Scientific Model • Orbital Planes & Intersection Nodes The 5° Incline
Earth's Ecliptic Plane (Flat) EARTH NODE 1 (Alignment Point) NODE 2 (Alignment Point) Moon is ABOVE plane Shadow passes ABOVE Earth • No Eclipse Moon is BELOW plane Shadow passes BELOW Earth • No Eclipse 5° Tilt
Why Shadows Miss Most Months
Because of the 5-degree tilt, the Moon spends most of its orbit above or below the ecliptic plane. During New Moon, its shadow shoots into empty space above or below Earth!
The Node Bullseye Condition
An eclipse requires a dual condition: the Moon must reach a node (an orbital plane intersection point) at the exact same time as a New Moon or Full Moon.
Eclipse Seasons (~Every 6 Months) The nodes align with the Sun roughly twice a year, creating predictable windows of eclipses.
Saros Cycle
GO
Student Recording Sheet Task • Station 4 Sketch the 5° orbital tilt model, mark the nodes, and solve the monthly eclipse mystery.
Card 4 of 4
Eclipse Tracker Student Sheet
6th Grade Earth & Space Science • Lab Rotation
Eclipse Tracker Recording Sheet
Name:
Date:
Period:
1
Station 1: Solar Eclipses & Eye Safety
New Moon Required
1. Sketch & Label the Alignment: (Sun, Moon, Earth & Shadow)
Draw celestial bodies in order and show the Moon's shadow cone hitting Earth:
2. Contrast Umbra and Penumbra:
Umbra (Inner shadow effect on Earth):
Penumbra (Outer shadow effect on Earth):
3. Eye Safety Defense: Why are ordinary sunglasses unsafe, and what certification must eclipse glasses carry?
2
Station 2: Lunar Eclipses & Red Moons
Full Moon Required
1. Sketch & Label the Alignment: (Sun, Earth, Moon & Shadow)
Draw celestial bodies in order and show Earth's shadow engulfing the Moon:
2. The "Blood Moon" Mystery: Why does the Moon turn reddish-orange?
Explain Rayleigh scattering and the role of Earth's atmosphere:
3. Visibility & Safety: Why is a lunar eclipse visible to half the planet at once and completely safe to watch naked-eye?
Cosmic Shadows Lab Investigation Turn page over for Stations 3 & 4 → Page 1 of 2
Part 2
Comparative Analysis & Orbital Patterns
Student Name:
3
Station 3: Clash of Shadows • Compare & Contrast
Matrix Analysis
| Comparison Factor | Solar Eclipse | Lunar Eclipse |
|---|
| Middle Body | | |
| Moon Phase | | |
| Viewing Area | | |
| Totality Duration | | |
Scenario A Identification:
Type:
Evidence from scenario:
Scenario B Identification:
Type:
Evidence from scenario:
4
Station 4: Orbital Tilt & Predictable Patterns
5° Orbital Tilt
1. The Monthly Eclipse Conundrum:
Why don't eclipses occur every single month during New and Full Moons?
2. Orbital Nodes & Tilt Sketch:
Sketch the 5° tilt of the Moon's orbit and mark the two nodes:
Draw the ecliptic plane & tilted lunar orbit:
Synthesis Challenge • Exit Application
Suppose an astronomer tells you: Is this true? Explain why using shadow size and viewing area concepts.
Station Master Directions Guide
Teacher Facilitation & Lab Logistics
Station Master Directions Guide
NGSS MS-ESS1-1 Earth-Sun-Moon System
Lesson Pacing • 45–55 Minute Total Run Time
4 stations • 8–10 minutes per station rotation • 2 minutes transition • 7 minutes wrap-up
Group Size: 3–4 students
Physical Station Setup
- Placards: Print each card in Shadow Stations Cards and place in acrylic stand or tape to tables 1–4.
- Duplicate Stations: For classes of 24–32 students, create 2 identical sets (Stations 1A–4A and 1B–4B) to keep groups small.
- Supplies: Provide 1 double-sided Eclipse Tracker recording sheet per student and pencils/colored pens.
- Optional Hands-On Prop: Place a flashlight (Sun), foam ball (Moon), and globe (Earth) at Station 1 and 2 for tactile modeling.
Rotation Directions & Norms
- Roles: Assign a Timekeeper, Card Reader, and Discussion Captain in each group.
- Active Discussion: Students must discuss the prompt together before recording answers on their individual sheets.
- Signal Bell: Give a 1-minute warning before rotation; all students push in chairs and rotate clockwise on chime.
- Pacing Check: If groups finish early, have them explain the "Why isn't it black?" mystery at Station 2 to each other.
Key Misconceptions & Teacher Coaching Cues
Misconception 1: "Moon goes behind clouds or Earth's weather"
Clarify that eclipses occur entirely outside Earth's atmosphere in deep space due to astronomical shadow cones.
Misconception 2: "Eclipses happen every month"
Remind students to focus on Station 4's 5° orbital tilt. Shadows miss high or low during almost every New/Full Moon.
Misconception 3: "Sunglasses are okay for a quick peek"
Emphasize Station 1 safety. Regular sunglasses let dangerous invisible infrared and UV radiation fry retina cells painlessly.
Misconception 4: "Moon emits its own red light"
Reinforce Rayleigh scattering: it is sunlight bent through Earth's dusty ring of sunsets and projected onto the Moon.
Cosmic Shadows Teacher Resource See Page 2 for Complete Station Answer Key → Page 1 of 2
KEY
Station Recording Sheet • Teacher Answer Key
Master Grading Reference
